Pass PVR in sregs
authorAlexander Graf <agraf@suse.de>
Fri, 30 Oct 2009 05:47:02 +0000 (05:47 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Thu, 5 Nov 2009 05:49:51 +0000 (16:49 +1100)
commitec3c11aa5f9d0a7f48f46d6790c33ccc654fd6ec
tree14d07266eab4f3c23cac149c1f9189835879e068
parent4e755758cbbeb0afe44556c1ce52ea6f590ed5bf
Pass PVR in sregs

Right now sregs is unused on PPC, so we can use it for initialization
of the CPU.

KVM on BookE always virtualizes the host CPU. On Book3s we go a step further
and take the PVR from userspace that tells us what kind of CPU we are supposed
to virtualize, because we support Book3s_32 and Book3s_64 guests.

In order to get that information, we use the sregs ioctl, because we don't
want to reset the guest CPU on every normal register set.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/include/asm/kvm.h